Gas Detector Knowledge Gas Recognition: Oxygen (O2)

Chemical identity
● Product Name: Oxygen (cooled)
● Chemical formula: O2
● Alias: Oxygen (cooled), Oxygen USP, LOX, Cryogenic Liquid Oxygen ● Product Use Type: General Industry

[composition/composition information]

ingredient	CAS number	Concentration (volume)
oxygen	7782-44-7	100%

Concentration is nominal. For the exact concentration of the mixture, refer to the technical specifications.

【Overview of dangers】
Emergency summary
● Extremely cold liquid and pressurized gas.
● Direct contact with liquid can cause frostbite.
● May react violently with flammable materials.
● Keep away from oil, grease and combustibles.
Potential health hazards
● Inhalation: Breathing 75% or more of atmospheric oxygen for several hours may cause nasal insufflation, cough, sore throat, chest pain, and difficulty breathing. Breathing pure oxygen can cause lung damage and also affect the central nervous system. Breathing pure oxygen can cause lung damage and also affect the central nervous system. Atmospheric oxygen pressure of 75% or more may cause nasal insufflation, cough, sore throat, chest pain, and difficulty breathing.
● Eye contact: Contact with liquid may cause cold burns/frosts sting.
● Skin contact: Contact with liquid may cause cold burns/frosts sting. May cause severe frostbite.
● Ingestion: Ingestion is not considered as a potential route of exposure.
Exposure guidelines
● The main invasive route: Inhalation.
Eyes and skin contact.
Target Organ: None.
Exacerbation of already affected disease ● If oxygen is used for people with chronic obstructive lung disease, increase oxygen concentration in the blood, reduce breath pressure and increase retained carbon dioxide to dangerous concentrations. no.

【first-aid】
• Skin contact: Remove contaminated clothing and shoes and immediately flush eyes or skin with plenty of water for at least 15 minutes. Rinse the frozen area with plenty of water. Do not take off your clothes. As long as it is feasible, the affected part is placed in a warm water bath, and the water temperature does not exceed 40°C (105°C). Use a sterile dressing to wrap the wound.
● Eye contact: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
● Ingestion: Ingestion is not considered as a potential route of exposure.
● Inhalation: Seek medical attention after severe contact. Move to fresh air.

【Fire-fighting measures】
● Suitable extinguishing agents: All known extinguishing agents can be used. Use an appropriate extinguishing agent for the surrounding fire.
● Special hazards: Combustibles come in contact with liquid oxygen and may explode when ignited or subjected to impact. Some substances that are not flammable in the air may burn in the presence of oxidants. Contact with organic and most inorganic substances may cause combustion. Vapor clouds can lead to ambiguous visibility. Evacuate the site and remove all ignition sources until all leaked liquid has evaporated (no frost on the floor).
Keep away from the cylinder and spray it from a protected location to cool it. Do not spray water directly into the container vents. If possible, stop the delivery of the product.
● Special personal protective equipment for firefighters: If necessary, wear self-contained breathing apparatus when extinguishing. In an oxygen-enriched air environment, fire-resistant clothing may burn and provide no protection.
● Other information: Some substances that are not flammable in the air may burn in an oxygen-enriched air environment (over 23%). In an oxygen-enriched air environment, fire-resistant clothing may burn and provide no protection.

[Leakage emergency treatment]
● Personal precautions: Clothing exposed to high concentrations of oxygen for 30 minutes or more is a potential fire hazard. Stay away from ignition sources. Evacuate personnel to safe areas. Increase ventilation in the operating area. Monitor oxygen content. The leak will quickly evaporate, forming an oxygen-poor vapor cloud.
Gas/vapor is heavier than air. It may accumulate in narrow places, especially at or below the water level. Persons exposed to high concentrations of oxygen should stay in well-ventilated or open spaces for 30 minutes when entering closed spaces or near ignition sources.
● Cleaning methods: Increase the ventilation of the operating area. Evacuate the site and remove all ignition sources until all leaked liquid has evaporated (no frost on the floor).
● Other suggestions: Increase the ventilation in the leak area and monitor the oxygen content.

[Operation and Storage]
Disposal
● All meters, valves, regulators, pipes, and equipment used in an oxygen environment must be cleaned to suit this atmosphere. Oxygen cannot be used as a substitute for compressed air. It is forbidden to use an oxygen nozzle for any purpose of cleaning, especially clothing, because it increases the likelihood of combustion. Before use, you should know and understand the product's characteristics and dangers. Only properly trained and experienced personnel can operate the compressed gas. Check the label for confirmation before use. Do not remove or damage the label provided by the supplier to confirm the contents of the cylinder. Before connecting the cylinders, pay attention to the following: The gas system is suitable, especially the pressure range and material. Before using the connection container, feedback from the system to the container is prohibited. Even if it is connected to the device, close the valve after each use and after it is empty. Do not attempt to repair cylinder valves and pressure relief devices. If the valve is damaged, report the supplier immediately. When users encounter any difficulties with the cylinder valve, stop using it and contact the supplier. Do not remove or exchange takeovers. Prevents trapping of cryogenic liquids in closed systems without the use of pressure safety devices. When transporting cylinders, the trailers (carts, trolleys, etc.) are transported even at short distances. If you have questions about how to operate a particular gas, consult your supplier. When the gas is released into the system at a lower pressure level than the vessel, a suitable pressure regulator is used. Do not subject the cylinder to abnormal mechanical vibration, as it may damage the valve and pressure relief device. Only use ducts designed for cryogenic fluids. Only use equipment that is used in an oxygen environment after cleaning and that meets the cylinder pressure rating. Do not allow oil, grease, or other flammable substances to come into contact with valves or containers containing oxygen or other oxidants. All ventilation application pipes are transported outside the building.
store
● Warning! Do not change or apply pressure to the mating connection. Keep the container always in a vertical position. The cylinders should be stored in well-ventilated buildings, preferably open to the atmosphere. Avoid storage temperatures exceeding 50°C (122°). The storage of all containers should be set to "first-in, first-out". Avoid storing in narrow places. Full and empty cylinders should be isolated. Store containers in areas where there is no risk of fire and keep them away from heat and sources of ignition. Return empty bottles promptly. Check the condition of the container regularly and check for leaks. Do not store in open air to prevent rust and extreme weather. Do not store cylinders in environments that may accelerate corrosion. The cryogenic liquid container should be equipped with a pressure safety device to control the internal pressure. In normal conditions, these containers will periodically release the product. Containers containing oxygen and oxidants and flammable gases should be separated by fire protection.

[contact control/personal protection]
engineering control
● By natural control or mechanical control to prevent the oxygen concentration in the anoxic atmosphere to be higher than 23%.
PERSONAL PROTECTIVE EQUIPMENT ● Respiratory protection: No need for proper ventilation.
● Hand protection: loose fit with insulating gloves or leather gloves. Working gloves are recommended when handling cylinders. The gloves must be clean and free of oil and grease on the outside. The penetration time of the selected glove must be greater than the predetermined period of use.
● Eye protection: Protect eyes, face, and skin from splattered liquids. It is recommended to use safety glasses when handling cylinders.
Skin and body protection: Persons exposed to high concentrations of oxygen should stay in well-ventilated or open spaces for 30 minutes when entering closed spaces or near ignition sources. Do not touch unprotected body parts with uninsulated pipes or containers containing cryogenic fluids. Super-cooled metals will cause the skin to stick quickly and tears in pain when trying to retract. It is recommended to use safety shoes when handling cylinders.
● Specific instructions on hygiene protection: Ensure adequate ventilation, especially in confined areas.

[Physical and Chemical Properties]
● Condition: liquefied gas.
● Color: blue.
● Odor: Odorless warning feature.
● Molecular weight: 32g/mol
Relative vapor density: 1.1 (air = 1)
Relative density: 1.1 (water = 1)
●Boiling point/boiling range: -297?(-183°C)
Critical temperature: -180°F (-118°C)
● Melting point/melting range: -362°F (-219°C)
● Water solubility: 0.039g/l [Stability and Reactivity]
● Stability: Stable under normal conditions.
● Conditions to avoid: Oil, grease, and all other flammable substances.
Flammable substances.
Organic matter.
Finelydividedaluminium.
Carbon steel.
reducing agent.

[toxicology information]
Acute health hazards
● Ingestion: The product itself has no useful information.
● Inhalation: The product itself has no useful information.
● Skin: The product itself has no useful information.
Chronic health hazards
• Preterm infants exposed to high concentrations of oxygen may experience delayed retinal damage and may develop retinal detachment and blindness. Retinal damage may also occur in long-term (24-48 hours) exposure to 100% of adults. At 2 or more air pressures, the central nervous system (CNS) is poisoned. Symptoms include nausea, vomiting, dizziness or dizziness, twitching, visual changes and loss of consciousness, and generalized seizures. At 3 atmospheres, CNS poisoning occurred in less than 2 hours and took place within 6 minutes at only 6 minutes.

[ecological data]
● Ecotoxicological effects:
Water toxicity: The product itself has no useful information.
Toxicity to other organisms: No relevant information available.
● Persistence and degradability:
Liquidity: No relevant information.
Bioaccumulation: The product itself has no useful information.

Disposal
● Residual/unused products: Return unused products to the supplier with the original cylinders. If you need guidance, contact the supplier.
● Contaminated packaging: recycled by the supplier.

【Transport information】
●CFR Correct Transport Name: Oxygen, Cooling Liquid Rating: 2.2(5.1) UN/ID: UN1005
● IATA correct shipping name: Oxygen, Cooling Liquid Rating: 2.2 (5.1) UN/ID: UN1005
● IMDG Correct Transport Name: Oxygen, Cooling Liquid Rating: 2.2 (5.1) UN/ID: UN1005
●CTC proper shipping name: Oxygen, Cooling Liquid Rating: 2.2 (5.1) UN/ID: UN1005
● Other information: Avoid transporting vehicles that are not separated from the driver's cab through the loading space. Make sure the driver understands the potential hazards and knows what to do in an emergency.

【Regulatory Information】
Occupational Safety and Health Administration (OSHA) Hazard Communication Standard (29CFR 1910.1200) Hazard Ratings • Oxidizers • Low Temperature (Cooling)

country	List of regulations
United States	TSCA
EU	EINECS
Canada	DSL
Australia	AICS
Japan	ENCS
Korea	ECL
China	SEPA
Philippines	PICCS

EPASARA Title III, Section 312 (40CFR370) Hazard Classifications ● Acute Health Hazards ● Fire Hazards The California Safe Drinking Water and Toxic Enforcement Act (Recommendation 65)
● This product does not contain any chemicals known to be the cause of cancer, birth defects, or any other harmful effects in California.

【other information】

Level: NFPA Level	Level: HMIS Level
Health: 3	Health: 3
Flammability: 0	Flammability: 0
Instability: 0	Physical hazards: 2
Special case: ox